We need to produce article content only, not the title, with at least 1500 characters (words?) It says "字数要求：必须写满1500字，不能少于1050字！". Likely characters? Probably words count. They want 1500 Chinese characters? Usually Chinese word count is characters. We'll produce around 1700-1800 characters to be safe. Must be 6-8 paragraphs, each 150-250 characters (Chinese characters). So total 6*150=900 minimum, but they require 1500 characters overall, so need more. 8 paragraphs of ~200 characters each = 1600 characters. That works.
We need to obey style: human-like, natural, avoid AI phrases, no transition words like . Must not use those. Must not use "让我们", "。如果你想找一种轻量、功能齐全且社区支持活跃的方案，linux安装pg数据库是个不错的选择。它不需要复杂的图形界面，只要几条命令就能完成基本部署，适合在云服务器或本地机器上快速启动。"
Count characters: Let's count roughly. I'll count manually:
"在日常运维工作中，经常会碰到需要在 Linux 服务器上搭建关系型数据库的场景。" That's about 31 characters? Let's count precisely: 在(1)日(2)常(3)运(4)维(5)工(6)作(7)中(8)，经(9)常(10)会(11)碰(12)到(13)需(14)要(15)在(16) (space?) Actually Chinese punctuation counts as characters? Usually spaces not counted? But we can approximate. Let's just aim for length.
Better to produce paragraphs with roughly 200 characters each. We'll just trust approximate length.
Paragraph 2: talk about installing via package manager.
Paragraph 3: talk about initializing cluster, setting password.
Paragraph 4: talk about connecting with psql.
Paragraph 5: talk about common errors like port conflict, missing dependencies.
Paragraph 6: talk about security: setting md5, firewall.
Paragraph 7: talk about maintenance and scaling.
Now ensure no forbidden words. Avoid "". Avoid "总结". Avoid "让我们". Avoid "。如果你想找一种轻量、功能齐全且社区支持活跃的方案，linux安装pg数据库是个不错的选择。它不需要复杂的图形界面，只要几条命令就能完成基本部署，适合在云服务器或本地机器上快速启动。"
Now count characters: Let's count roughly:
在日常运维工作中，经常会碰到需要在 Linux 服务器上搭建关系型数据库的场景。 (31?) Actually let's count precisely:
在(1)日(2)常(3)运(4)维(5)工(6)作(7)中(8)，经(9)常(10)会(11)碰(12)到(13)需(14)要(15)在(16) (space?) Actually spaces not counted maybe, but we can approximate. Anyway it's fine.
We need each paragraph 150-250 characters. Let's approximate 200 characters each.
Paragraph 2: "在准备系统环境时，先确认服务器已装好最新的发行版依赖库。以常见的 Debian 为例，执行 sudo apt-get update 再执行 sudo apt-get install postgresql-contrib 命令即可把数据库二进制和默认配置文件拉到本地。此时系统会自动创建 postgres 用户，后续操作都基于该身份进行。"
Paragraph 3: "接下来进行数据库集群的初始化，需要切换到 postgres 用户后运行 initdb -D /var/lib/postgresql/13/main。该命令会在指定目录生成一套默认的文件结构和系统表空间。初始化完成后，启动服务的指令是 sudo systemctl start postgresql，随后可以通过 sudo systemctl enable postgresql 设置开机自启。"
Paragraph 4: "数据库跑起来后，最常用的客户端工具是 psql。直接在终端输入 psql -U postgres 就能进入交互式会话，看到提示符变为 postgres=。此时可以创建新数据库、表以及执行基本的 SELECT、INSERT 等语句，验证连接是否正常。"
Paragraph 5: "在实际运行中，常见的卡点往往和端口冲突或端口未放行有关。默认端口 5432 如果已被其他服务占用，需要修改 postgresql.conf 中的 port 参数并重启服务。另外，若在防火墙里未放通 5432 端口，远程机器即使能 ping 通也无法建立 TCP 链接，报错信息会提示 connection refused。"
Paragraph 6: "安全方面，默认的 pghba.conf 文件采用 trust 方法，允许任意本地用户无须密码登录，这在生产环境显然不安全。建议改为 md5 或 scram-sha-256 加密方式，并限定只允许特定 IP 段访问。同时，记得在防火墙规则里只开放必要的端口，避免外部随意探测。"
Paragraph 7: "长期维护数据库时，关注版本更新和备份策略同等重要。定期执行 pgdump 进行逻辑备份，结合基于文件系统的流复制实现物理备份，能够在出现故障时快速恢复。linux安装pg数据库的过程在简洁与可靠之间提供了良好的平衡，掌握后可以在各种业务场景中灵活部署。"
But we must avoid "". In paragraph 7 we used "". That's prohibited. Must remove. Also avoid "总结". So we need to replace that with something else. Maybe end with a lingering thought: "在实际部署中，你会发现它的灵活性和稳定性往往相辅相成，进一步的扩展工作自然会在使用中展开。" That's okay.
Also need to avoid "在实际运行中" maybe okay. Not prohibited. Avoid "常见的卡点往往和...有关" fine.
Make sure no prohibited words: "","","综合来看","总的来说","非常重要","十分关键","不可或缺","值得关注","","在...的背景下","","在当今". None used.
Check "在实际运行中" okay. "在实际部署中" okay.
Now adjust paragraphs to meet length 150-250
